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Best prompts for research before buying

AI prompts to research cars and tech before you buy. Add your budget and must-haves, copy into ChatGPT, and get a shortlist to verify.

Big purchases might go wrong when you just compare sticker prices. Also check things such as ownership cost, warranty rules, or what reviews actually say lol. These prompts turn your budget and must-haves into a comparison table and a short checklist before you sign at a dealer or click checkout online.

2 prompts

For narrowing new or used cars before a dealer visit. In order to visit the car dealer ship without having to worry getting ripped off.

Act as an independent car-buying advisor who helps shoppers research before they visit a dealer or sign paperwork. Goal: Build a research brief that narrows my choice to a shortlist I can verify in person and online. Context: - Country or region (affects models, taxes, and incentives): [COUNTRY OR REGION] - New, used, or open to both: [NEW / USED / EITHER] - Total budget (purchase price, not monthly guess): [BUDGET RANGE AND CURRENCY] - Monthly payment cap if financing (optional): [MAX MONTHLY PAYMENT OR LEAVE BLANK] - Primary use: [COMMUTE, FAMILY, HIGHWAY, CITY, TOWING, OR MIX] - Annual driving: [MILES OR KM PER YEAR] - Must-haves: [SEATS, BOOT SPACE, EV/HYBRID/PETROL/DIESEL, AWD, SAFETY FEATURES, BRAND PREFERENCES] - Nice-to-haves I can drop: [OPTIONAL FEATURES] - Models I am already considering (optional): [MODELS OR LEAVE BLANK] - How long I plan to keep the car: [YEARS] - Parking and charging (if relevant): [GARAGE, STREET, HOME CHARGER YES/NO] Success criteria: - Every recommendation ties back to my must-haves and budget - Compares at least three realistic options, not only flagship trims - Separates facts I should verify (price, recall, trim availability) from your reasoning - Includes total cost of ownership, not just sticker price - Gives me dealer-ready questions and a short test-drive checklist Instructions: 1. List up to 5 clarifying questions if my inputs are too thin. If you can proceed, say "Proceeding with assumptions" and list them. 2. State my non-negotiables in one short bullet list pulled from my inputs. 3. Propose a shortlist of 3 to 5 vehicles (make, model, and typical trim level). For each, say why it fits and one reason it might not. 4. Build a comparison table. Include model, typical price band, running costs, practicality, safety highlight, and warranty note as columns. 5. Sketch 5-year ownership costs: fuel or charging, insurance band (low/mid/high), maintenance tendency, depreciation risk in plain language. 6. List known issues, recalls, or model-year gotchas I must verify on official sources. Label each as "verify before buying." 7. Write 8 to 10 questions to ask the dealer (OTD price, fees, delivery date, demo vs new, financing APR, trade-in, cancellation policy). 8. Add a test-drive checklist of 6 items (visibility, braking, noise, tech, rear seat, charging or fuel flap if EV). 9. End with a "Next 7 days" plan: 4 concrete research steps before I put money down. Output format: Return sections 1 through 9 in order. Use the numbered headings exactly as above.

How to use

  1. Fill [MUST-HAVES] with deal-breakers only. Move preferences to [NICE-TO-HAVES] so the shortlist stays wide enough.
  2. Run once for a shortlist, then start a new message with "Deep dive on [MODEL]" for trim and option advice.
  3. Paste a dealer quote or listing link in a follow-up and ask "Does this OTD price look fair for [REGION]?"

Tips

  • Monthly payment math hides total cost. Decide [BUDGET RANGE] on full price first, then check financing.
  • Model-year changes matter. Ask for the specific year and facelift when comparing reviews.
  • Treat incentive and tax claims as "verify before buying" even with web search enabled.

For best results, give your AI access to:web search

Example output

Section 4

| Model | Typical price band | Fuel note | Practicality | Safety highlight | Warranty |
| --- | --- | --- | --- | --- | --- |
| Toyota Corolla Hybrid | €28-32k new | Low fuel use in city | Compact boot | Strong crash scores in EU tests | 3y manufacturer |
| VW Golf 1.5 TSI | €30-35k new | Petrol, higher motorway use | Mid boot | Good adult protection | 2y + service packs vary |

Section 7

- What is the out-the-door price for this VIN, including delivery and registration?
- Which fees are mandatory vs optional on the contract?
- ...

Next 7 days
- Book two test drives on the same day to compare back-to-back
- Check national recall database for each shortlisted VIN year
- ...

For tech bought online, for example phones or laptops. You get review signals to trust or discard, and understand the different options available on the market.

Act as a tech shopping advisor focused on online purchases. Goal: Help me pick from a short shortlist using reviews and listing checks so I can checkout with fewer regrets. Context: - Country or region: [COUNTRY OR REGION] - Product type: [PHONE, LAPTOP, TABLET, MONITOR, HEADPHONES, OR OTHER] - Budget: [BUDGET RANGE AND CURRENCY] - Main use: [WORK, STUDY, GAMING, CREATIVE, OR MIX] - Must-haves: [KEY SPECS OR FEATURES] - Models I am considering (optional): [MODELS OR LEAVE BLANK] - Where I might buy: [AMAZON, MANUFACTURER STORE, MARKETPLACE, OR OPEN] Instructions: 1. Ask up to 3 clarifying questions if needed. Otherwise say "Proceeding with assumptions" and list them. 2. Suggest 3 products that fit my must-haves and budget. For each: one fit reason and one drawback. 3. Build a simple comparison table with product name, typical online price band, and one line on warranty or support in [COUNTRY OR REGION]. 4. Estimate true checkout cost: item price plus tax, shipping, and any likely accessories. Flag subscription upsells if relevant. 5. Review research for my shortlist: - Name 2 to 4 source types worth checking for [PRODUCT TYPE] (long-form tests, retailer reviews, forums, etc.) - Summarize recurring pros and cons from recent reviews, filtered for [MAIN USE] - List fake or manipulated review signals: sudden 1-star burst from new accounts, vague non-specific complaints with no photo or detail, complaints that describe a different model or use case, and reviews that read more like a competitor ad than a user report - Give 3 search phrases I should use to find real owner complaints, not just launch hype 6. List listing red flags on the store page (wrong model year, grey import, missing warranty, fake discounts, bundled junk). Mark each "verify before buying." 7. Give 5 questions to check on the product page or with seller chat before I pay (returns, restocking fee, warranty start, new vs refurb, who handles RMA). 8. End with a "Before checkout" checklist of 5 steps I can do in one sitting (include reading reviews and checking the listing). Output format: Return sections 1 through 8 in order. Use the numbered headings exactly as above.

How to use

  1. Paste a product URL in a follow-up and ask "Review this listing for red flags."
  2. After the shortlist, ask "Dig into owner reviews for [MODEL] focused on [MAIN USE]."

Tips

  • SKU means Stock keeping unit, it's the specific variant you are buying (model, storage size, color). Reviews for the product family can include a different SKU with different problems. Filter or search by your exact variant.
  • Star averages lie. Sort by recent and read the reviews with 1 to 3 stars for your exact SKU.
  • A burst of vague 1-star reviews from new accounts right after a product launch is a competitor signal, not a reliability signal.
  • Real negative reviews usually name a specific defect or describe follow-up with support.
  • Compare the same SKU across two sites. Bundles often hide a worse base model.

For best results, give your AI access to:web search

Example output

Section 5

Sources to check
- Two recent long-form reviews that test battery and thermals under load
- Retailer reviews sorted by "most recent" and 3-star to see mixed experiences

Recurring themes (writing use)
- Pros: quiet fans, strong keyboard, long idle battery
- Cons: screen glare, occasional coil whine on some units

Possible fake negatives to discard
- Five 1-star reviews posted the same week from accounts with no other history: likely competitor campaign
- "Broke after one day" with no photo or follow-up and the complaint applies to a different model: skip

Search phrases
- "ThinkPad X1 Carbon Gen 12 coil whine"
- "MacBook Air M3 real world battery writing"

Before checkout
- Read at least five recent 3-star reviews on the exact variant (model, storage, color) I am buying
- Screenshot price and return policy today
- ...

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